Refrigerator lining



sept'. 3Q 1924. 1,509,932

L. G. COPEMAN REFRIGERATOR LINING Filed March 5 1923 2 sheets-sheet 1 Sept. 30, 1924, f 1,509,932

v L. G. COPEMAN REFIGERATOR L'INING Filed March 5. 1923 2 Sheets-Sheet 2 Patented Sept."30, `1924.

LLOYD e. Corman, or FL'INT, Viifrnrlrear nnrmenaa'roa nutrire.y

Application led Marchy 5, 192.3. Serial No. 623,045.

To all 'whom #may concem: f

Be it known that I, LLOYD G.- CoPEMAN, a citizen of the United States, residin at Flint, vinl the county of Genesee and tate of Michigan, have invented certain new and useful Improvements in Refrigerator Linings, of which the following is a specification.

This invention'relates to container linings, especially insulated linings for refrigerators. rI`he object of the invention is to supplant as far as possible, the use of the special woods that are necessary for the interiors of refrigerators.

where my invention is of special adaptability is the stepped inside portion of the refrigerator doors'. These stepped portions are ordinarily made of wood, which is mitered ltogether at the corners. With an enameled refrigerator'it is customary to use a trowel to coat the. inside of the refrigerator with a coat or'layer of stonework, usually with what-is called oxo-chloride cement.v However, this in'no way does away withthe wooden stepped portion which is A builtup oflayersofspecial'wood. These are usually painted'white with enamelpaint. However, the first place where, the enamel chips off is at the corners of the stepped portion of the door. Moisture gets in at the joint, swelling and .opening of Athe joint takes place and the whole door'begins to.

go to pieces and gets in a very unsanitary condition.

LIt is the object of the present invention in particular to construct either a door interior out of hollow stonework or else to construct the .entire doorfout of the hollow 40 stonework. Where the entire door is conof thecontainer. .Other claims are limitedl ator. f

Gne of the .places on the refrigerator a container construction,

Specifically to the construction of the door.;

In lthe drawing: i Fig. 1 is a front elevation of the-refrigertrig. e is a fragmentary section taken on the, line 2 2 of Fig. 2 showing the door 1 I tile. and a wooden-door panel. 'I

Fig. 3 is. aperspective of the door tile after it has been cast.

Fig. 4 is a fragmentary detail of the moldI A 'showing how the bolt anchoring bushings are supported in themold during thecastV .in operation.

igs. 5 and 6 are fragmentary details` showing a modified form of construction in which the door panel and the door lining tile are separate stone castings, connected by a wooden insulating strip.

Fig. 7 isv a modified-form of construction in which the whole door isla single casting terial.

in which is used a coreofinsulating ma` The refrigerator casing may be constructf ed of wood, or othersuitablematerial. The

doors as shown in Fig. 1 have panels b that are 'wood. Instead of building up a step l constructionof Special woods as has heretofore been the almost universal. practice in refrigerator construction, -I employ a door fwards of 900 lbs. i For instance, the `mold is closed except for the 'air vent holes; the plastic oxo-chloride composition or'other concrete' mixture `is shot intothe mold under a very-heavy pressureV induced by a pump. This, lef course, ejects the 'plastic material through the vent holes and when the plastic `mixture has reached the .vent holes, I then plug theventholes, then continue the pressure and leave the contents of the mold under 'this pressure for some time.

The

pressure is then withdrawn and the com' 'l position allowed to securelyset. I have described and claimed in my two (zo-pending applications how the mold is* lined `with, paraiiine to facilitate the removal of' the "casting, and how also a finishing coating can be simultaneously cast on, to the exterior of the moulded article. These ap plications are respectively, Nos. 622,771, filed March 5, 1923, and 625,123, filed March 14, 1923. i i

On the'interior of the tile are cast a plurality of bosses d, in which are held the bushpanel is also cast of the same concrete or -a connecting wooden strip m, dovetailed to oxochloride material. Where the outer panel is cast of stonework as in Fig. 5, the screw anchors, such as the anchor 70 will haveto be used for the application of the hardware such as hinges and latches. These vscrew anchors 7s can be held 1n the mold 1n precisely the same way as shown by anchor e in Fig. 4. l Preferably, where the exterior panel of the door and lining tile are both of concrete or stone, it is better construction to provide the inner tile as shown in Figsr and 6 and secured to the outer stone panel by screws n, as shown in Fig. (j. This provides a barrier for the conduction of heat from the outside atmosphere to the interior of the refrigerator to lower the efeieney of the refrigerator.

In Fig. 7 I have shown a door constructed of a single piece of stone work; an insulating material such as cork or wood, designotedo, can be used as a colle-in the mould. Preferably, the lining tile is covered with a coating of enamel.

It will be evident that the use of the lining tile is very ac lvantageous in connection with enameling the interior of the door for obviously, the enamel may be a enamel or any enamel'which is baked in ovens can he used with no deleterious effects for the lining tile. It will be evident that other portions of the refrigerator can be built`up by similarly cast lining tile and with slight changes of construction, other portions of the refrigerator might be united to the lining tile or built 1n the same way as has been broadly indicated, in a modified construction. Hence, l1n some of the claims, 1 have referred to a refrigerator or contauun construction broadly without limitations to the' work lining therefor, comprising a separate .hollow tlle secured to the outer panel.

2. In a container construction. the couibination of an outer panel, and an inner lining therefor of stonework comprising a sepa.- rate hollow tile construction secured to lthe puter panel and enameled on its interior ace.

3. In a container construction, the conn 7 bination of an outerv panel and a lining therefor, comprising a tile having a bolt rc-` eeiving bushing cast therein. and a holt passed through the outer panel and screwed into the said anchoring bushing.

4. In a refrigerator door construction, the combination of an outer panel, a, hollow stepped cast tile of stonework and means `for securing the tile to the outer panel, there being an intervening strip of insulating niaterial between the exterior panel and the said tile. 1 l

5. In a refrigerator door construction, the combination of an outer panel, a lining in the 4form of a. stonework tile of hollow in terior construction, and means for securingr the tile to the door, the stonework construe tion provided with one or more tapped bushings for the purpose of receiving necessary screws. l i

6. ln a refrigerator construction, the coinbination of an outer wall and a lining in the form of 'a stonework detarhably secured to the outer wall and hollow on its interior.

7. In a refrigeratfu' construction, the con bination of an outer panel in the form of a molded stonework, and a lining in the fornl of a tile of stonework hollow on its interior, and an intervening insulating strip lmtween 'the outer stone panel and the inner stone l panel.

ln testnnony whereof l affix my signature.

LLOYD o. corni/IAN. 

